Comet HF thru 50MHz Telescopic Antenna For 3.5/7/10/14/18/21/24/28/50 MHz It is a 3-division structure that is convenient to carry. Telescopic antenna for multi-band HF to 50MHz band, whose frequency can be easily changed by short plug. Specs: 1/4 wave base loading type antenna Max input power: 100W (SSB) (All bands) Maximum length fully extended: 66 inches Antenna connector: PL-259